March 2, 2021 updates Posted on March 2, 2021 by Doug Loss Atmospheric Technosignatures: Searching for Intelligent Life in Alien Skies https://static1.squarespace.com/static/5e1e52526fe19076661d2a77/t/600638f0825cad7378ca8eeb/1611020536262/ Damage to Relativistic Interstellar Spacecraft by ISM Impact Gas Accumulation https://iopscience.iop.org/article/10.3847/1538-4357/abd4ec/meta Atmospheric characterization of hot Jupiters using hierarchical models of Spitzer observations https://arxiv.org/abs/2103.00010 An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685 https://arxiv.org/abs/2103.01016